granicus.if.org Git - strace/blob - tests/fchmodat.c

   1 /*
   2  * Check decoding of fchmodat syscall.
   3  *
   4  * Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
   5  * Copyright (c) 2016-2019 The strace developers.
   6  * All rights reserved.
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "tests.h"
  12 #include "scno.h"
  13
  14 #ifdef __NR_fchmodat
  15
  16 # include <fcntl.h>
  17 # include <sys/stat.h>
  18 # include <stdio.h>
  19 # include <unistd.h>
  20
  21 int
  22 main(void)
  23 {
  24         static const char sample[] = "fchmodat_sample";
  25
  26         if (open(sample, O_RDONLY | O_CREAT, 0400) < 0)
  27                 perror_msg_and_fail("open");
  28
  29         long rc = syscall(__NR_fchmodat, -100, sample, 0600);
  30         printf("fchmodat(AT_FDCWD, \"%s\", 0600) = %s\n",
  31                sample, sprintrc(rc));
  32
  33         if (unlink(sample))
  34                 perror_msg_and_fail("unlink");
  35
  36         rc = syscall(__NR_fchmodat, -100, sample, 051);
  37         printf("fchmodat(AT_FDCWD, \"%s\", 051) = %s\n",
  38                sample, sprintrc(rc));
  39
  40         rc = syscall(__NR_fchmodat, -100, sample, 004);
  41         printf("fchmodat(AT_FDCWD, \"%s\", 004) = %s\n",
  42                sample, sprintrc(rc));
  43
  44         puts("+++ exited with 0 +++");
  45         return 0;
  46 }
  47
  48 #else
  49
  50 SKIP_MAIN_UNDEFINED("__NR_fchmodat")
  51
  52 #endif